Breaking Changes
* (498) lukasturcani made fitness functions use `MoleculeRecord` instances as input, instead of `ConstructedMolecule`. This is a breaking api change, but a `ConstructedMolecule` can be retrieved from a `MoleculeRecord` with the `get_molecule()` method.
Additional Changes
* (478) austin-mroz added support for using `pathlib.Path` to `write()` methods, removing the need to write things like `str(path / new_path)`
* (479) austin-mroz and lukasturcani removed old database dumps from the tests, as they were not working and provided little utility